Necrotizing Fasciitis and Middle Ear Infection

A fasceíte necrosante (FN) é uma doença rara em pediatria. Na maior parte dos casos surge como complicação de varicela, sendo a pele habitualmente a porta de entrada e o Streptococcus pyogenes o agente mais frequente. Os autores descrevem um caso clínico de uma criança de 8 anos, previamente saudável que, no contexto de uma otite média aguda medicada com um anti-inflamatório não esteróide (AINE), desenvolve uma infecção invasiva a Streptococcus 13 hemoliticus do grupo A

A novel haemoglobin variant mimicking cyanotic congenital heart disease

Screening for critical congenital heart defects in newborn babies can aid in early recognition, with the prospect of improved outcome. However, as this universal newborn screening is implemented, there will be an increasing number of false-positive results. In order to avoid multiple investigations and uncertainty, an haemoglobin (Hb) variant must be included in the differential diagnosis in otherwise well newborns with low oxygen saturation by pulse oximetry. We describe a novel fetal Hb variant (heterozygous γ-globin gene (HBG1) mutation in exon 2 c.202G>A (p.Val68Met)) identified in a newborn with positive pulse oximetry screening for congenital heart disease.info:eu-repo/semantics/publishedVersio

Mathematical model of feet temperature

In this work it is consider the problem of finding the best approximation to characterize the feet temperature distribution. For this study it was consider the nonlinear least squares technique, combined with penalty method, to identify the function that approximate better the data obtained through thermographic images. The preliminary results indicate that the best function approximation is based on trigonometric sums

A mosca-da-azeitona, Bactrocera oleae (Gmelin), no Planalto Mirandês: ciclo biológico e importância económica.

Em Portugal o olival para produção de azeitona de mesa representa 4.0% da superfície olivícola. Trás-os-Montes concentra aproximadamente metade da área nacional e mais de 55% da produção. Um dos principais entraves a produção diz respeito aos prejuízos de natureza quantitativa e qualitativa. provocados peles inimigos da cultura. Entre estes inimigos assume particular relevo a mosca-da-azeitona, Bactrocera oleae (Gmelin) que constitui a praga chave da cultura no conjunto dos países da bacia do Mediterrâneo. Com 0 presente estudo pretendeu-se contribuir para o conhecimento do cicio biológico da mosca-da-azeitona, Bactrocera oleae (Gmelin), e sua importância económica em azeitona de mesa na região do Planalto Mirandês

Effect of the medium composition on the current of steady state voltammograms of neutral and charged species in dimethylformamide/toluene mixtures

Steady state voltammetric currents of both neutral and charged species obtained at microelectrodes are affected by the medium composition. Experiments carried out in N,N-dimethylformamide (DMF) and toluene/DMF mixtures for the reduction of diciano(fluoren-9-ylidene)methane and the methylviologen cation and for the oxidation of ferrocene, in the presence of different electrolyte concentrations indicate that both viscosity of the solution and mass transport by migration may have a strong effect on the measured limiting currents. These observations are particularly important in electroanalysis since the appropriate choice of the medium may substantially improve both the sensitivity and the detection limits of the electrochemical method.FEDER. PRAXIS/2/2.1/QUI /260/94

Generalized Chaplygin Gas, Accelerated Expansion and Dark Energy-Matter Unification

We consider the scenario emerging from the dynamics of a generalized $d$-brane in a $(d+1, 1)$ spacetime. The equation of state describing this system is given in terms of the energy density, $\rho$, and pressure, $p$, by the relationship $p = - A/\rho^{\alpha}$, where $A$ is a positive constant and $0 < \alpha \le 1$. We discuss the conditions under which homogeneity arises and show that this equation of state describes the evolution of a universe evolving from a phase dominated by non-relativistic matter to a phase dominated by a cosmological constant via an intermediate period where the effective equation of state is given by $p = \alpha \rho$.Comment: 5 pages, 4 figures, revte

Ciclo biológico e estragos associados a monosteira, Monosteira unicostata (Mulsant & Rey, 1852), em amendoeira, no Planalto Mirandês

A monosteira, Monostelro unicostata (Mulsant & Rey, 1852), e considerada uma praga importante da amendoeira. Contudo, em Portugal, são escassos os conhecimentos acerca da sua biologia e dos estragos que ocasiona. Neste sentido, com o presente trabalho pretendeu-se par um lado estudar o cicio biológico do insecto em amendoeira no Planalto Mirandês, e por outro lado proceder a uma avaliação dos estraagos causados pela praga. O trabalho decorreu em 2007 e 2008 num amendoal localizado em Vilarinho dos Galegos (Mogadouro) onde, com periodicidade semanal ou quinzenal, se procedeu a recolha de 20 folhas em 20 árvores para observação (i) da existência de ovos, ninfas e adultos de monosteira e (ii) do numero de folhas com estragos visíveis. Paralelamente, e com periodicidade aproximadamente quinzenal foi realizada a técnica de pancadas em 25 arvores escolhidas aleatoriamente na parcela para quantificação dos adultos da praga

The Revival of the Unified Dark Energy-Dark Matter Model ?

We consider the generalized Chaplygin gas (GCG) proposal for unification of dark energy and dark matter and show that it admits an unique decomposition into dark energy and dark matter components once phantom-like dark energy is excluded. Within this framework, we study structure formation and show that difficulties associated to unphysical oscillations or blow-up in the matter power spectrum can be circumvented. Furthermore, we show that the dominance of dark energy is related to the time when energy density fluctuations start deviating from the linear $\delta \sim a$ behaviour.Comment: 6 pages, 4 eps figures, Revtex4 style. New References are added. Some typos are corrected. Conclusions remain the sam

Gravitation with superposed Gauss--Bonnet terms in higher dimensions: Black hole metrics and maximal extensions

Our starting point is an iterative construction suited to combinatorics in arbitarary dimensions d, of totally anisymmetrised p-Riemann 2p-forms (2p\le d) generalising the (1-)Riemann curvature 2-forms. Superposition of p-Ricci scalars obtained from the p-Riemann forms defines the maximally Gauss--Bonnet extended gravitational Lagrangian. Metrics, spherically symmetric in the (d-1) space dimensions are constructed for the general case. The problem is directly reduced to solving polynomial equations. For some black hole type metrics the horizons are obtained by solving polynomial equations. Corresponding Kruskal type maximal extensions are obtained explicitly in complete generality, as is also the periodicity of time for Euclidean signature. We show how to include a cosmological constant and a point charge. Possible further developments and applications are indicated.Comment: 13 pages, REVTEX. References and Note Adde